5TE1

C20S, C293G Mutant N-terminal Human ATP Citrate Lyase Bound to 4R-Hydroxycitrate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Binding of hydroxycitrate to human ATP-citrate lyase.

Hu, J.Komakula, A.Fraser, M.E.

(2017) Acta Crystallogr D Struct Biol 73: 660-671

  • DOI: 10.1107/S2059798317009871
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Hydroxycitrate from the fruit of Garcinia cambogia [i.e. (2S,3S)-2-hydroxycitrate] is the best-known inhibitor of ATP-citrate lyase. Well diffracting crystals showing how the inhibitor binds to human ATP-citrate lyase were grown by modifying the prot ...

    Hydroxycitrate from the fruit of Garcinia cambogia [i.e. (2S,3S)-2-hydroxycitrate] is the best-known inhibitor of ATP-citrate lyase. Well diffracting crystals showing how the inhibitor binds to human ATP-citrate lyase were grown by modifying the protein. The protein was modified by introducing cleavage sites for Tobacco etch virus protease on either side of a disordered linker. The protein crystallized consisted of residues 2-425-ENLYFQ and S-488-810 of human ATP-citrate lyase. (2S,3S)-2-Hydroxycitrate binds in the same orientation as citrate, but the citrate-binding domain (residues 248-421) adopts a different orientation with respect to the rest of the protein (residues 4-247, 490-746 and 748-809) from that previously seen. For the first time, electron density was evident for the loop that contains His760, which is phosphorylated as part of the catalytic mechanism. The pro-S carboxylate of (2S,3S)-2-hydroxycitrate is available to accept a phosphoryl group from His760. However, when co-crystals were grown with ATP and magnesium ions as well as either the inhibitor or citrate, Mg2+-ADP was bound and His760 was phosphorylated. The phosphoryl group was not transferred to the organic acid. This led to the interpretation that the active site is trapped in an open conformation. The strategy of designing cleavage sites to remove disordered residues could be useful in determining the crystal structures of other proteins.


    Organizational Affiliation

    Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP-citrate synthase
A, B
828Homo sapiensMutation(s): 2 
Gene Names: ACLY
EC: 2.3.3.8
Find proteins for P53396 (Homo sapiens)
Go to Gene View: ACLY
Go to UniProtKB:  P53396
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
NA
Query on NA

Download SDF File 
Download CCD File 
A, B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
7A2
Query on 7A2

Download SDF File 
Download CCD File 
A, B
3-C-carboxy-2-deoxy-L-threo-pentaric acid
C6 H8 O8
ZMJBYMUCKBYSCP-DZSWIPIPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.188 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 98.770α = 90.00
b = 73.320β = 97.06
c = 131.370γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2016-09-20 
  • Released Date: 2017-08-09 
  • Deposition Author(s): Hu, J., Fraser, M.E.

Revision History 

  • Version 1.0: 2017-08-09
    Type: Initial release
  • Version 1.1: 2017-08-16
    Type: Database references